Question Detail
Question
What is the mass percent of bromine in C₂H₃BrF₂? (C=12, H=1, Br=80, F=19) (Duplicate pattern, but we'll provide a variant)
Correct Answer
Option C is the correct answer.
Detailed Explanation
Molar mass = (2×12)+(3×1)+80+(2×19)=24+3+80+38=145 g/mol. %Br = (80/145)×100 = 55.17% ≈ 55.2%.
Hint
Calculate total molar mass and mass of bromine.